May I?

A couple of years ago we grandparents introduced the time-tested old game of May I. Rules are easy and clear, and everyone stays focused in case a fellow player forgets to ask "May I?" before obeying the request.
Yesterday the players came up with an aqua version accompanied by essential splashing. The photo shows younger granddaughter, friend, friend, and older granddaughter poised close to the finish line but cooperating patiently with my photography.
I have always liked the idea of requiring children to ask politely for permission before they can make even the slightest move. And if they don't, consequences. Then there's the real world.